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2863 = 7409

2863 has 4 divisors (see below), whose sum is σ = 3280. Its totient is φ = 2448.

The previous prime is 2861. The next prime is 2879. The reversal of 2863 is 3682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2863 - 21 = 2861 is a prime.

It is a d-powerful number, because it can be written as 27 + 62 + 83 + 37 .

It is the 54-th Hogben number.

It is a Duffinian number.

2863 is a modest number, since divided by 63 gives 28 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861) by changing a digit.

It is a nontrivial repunit in base 53.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198 + ... + 211.

It is an arithmetic number, because the mean of its divisors is an integer number (820).

22863 is an apocalyptic number.

2863 is a deficient number, since it is larger than the sum of its proper divisors (417).

2863 is an equidigital number, since it uses as much as digits as its factorization.

2863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its digits is 288, while the sum is 19.

The square root of 2863 is about 53.5070088867. The cubic root of 2863 is about 14.1995238880.

Adding to 2863 its sum of digits (19), we get a palindrome (2882).

It can be divided in two parts, 286 and 3, that multiplied together give a palindrome (858).

The spelling of 2863 in words is "two thousand, eight hundred sixty-three".

Divisors: 1 7 409 2863